Answer : 3. "Ganeshwar"
Explanation :

Ganeshwar is located near the copper mines of the Sikar-Jhunjhunu area of the Khetri copper belt in Rajasthan. The Ganeshwar-Jodhpura culture has over 80 other sites currently identified. The period was estimated to be 2500–2000 BC. Historian Ratna Chandra Agrawala wrote that Ganeshwar was excavated in 1977.